Animal Cell specialisation

• Most animal cells are specialised
• When cells become specialised scientists call that differentation
• Sperm cell contains their genetic information in the nucleus. Contain half of the genetic information of a normal adult cell
• Sperm cells have a long tail and are streamlined to make this easier
• Nerve cell sends electrical impulses around the body
• The axon carries electrical impulses from one part of the body to another
• The myelin sheath insulates the axon and speeds up the transmission of nerve impulses
• Synapses are the junctions between neurones and are where the nerve impulse is transmitted
• Dendrites increase surface area so that other nerve cells can connect more easily
• Muscle cells can contract
• Muscle tissue has a high density of blood capillaries to supply oxygen and nutrients
• Muscle fibres contain many mitochondria as they need lots of energy to contract